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feat: add ASN info & accuracy radius
Signed-off-by: Liam Stanley <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| // Copyright (c) Liam Stanley <[email protected]>. All rights reserved. Use | ||
| // of this source code is governed by the MIT license that can be found in | ||
| // the LICENSE file. | ||
|
|
||
| package lookup | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "net" | ||
| "strings" | ||
|
|
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| "github.com/lrstanley/geoip/internal/models" | ||
| "github.com/lrstanley/go-bogon" | ||
| maxminddb "github.com/oschwald/maxminddb-golang" | ||
| ) | ||
|
|
||
| // Lookup does a geoip lookup of an address. | ||
| func (s *Service) Lookup(ctx context.Context, r *models.LookupRequest) (result *models.Response, err error) { | ||
| if r.Language == "" { | ||
| r.Language = s.config.DefaultLanguage | ||
| } | ||
|
|
||
| if val := s.cache.Get(r.CacheID()); val != nil { | ||
| val.Cached = true | ||
| return val, nil | ||
| } | ||
|
|
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| ip := net.ParseIP(r.Address) | ||
| if ip == nil { | ||
| ip, err = s.rslv.GetIP(ctx, r.Address) | ||
| if err != nil || ip == nil { | ||
| s.logger.WithError(err).WithField("addr", r.Address).Debug("error looking up addr as hostname") | ||
|
|
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| return &models.Response{Error: fmt.Sprintf("invalid ip/host specified (or timed out): %s", r.Address)}, nil | ||
| } | ||
| } | ||
|
|
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| if is, _ := bogon.Is(ip.String()); is { | ||
| return &models.Response{Error: "internal address"}, nil | ||
| } | ||
|
|
||
| geo, err := s.lookupGeo(ctx, ip) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| network, asn, err := s.lookupASN(ctx, ip) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| result = &models.Response{ | ||
| IP: ip.String(), | ||
| City: geo.City.Names[r.Language], | ||
| Country: geo.Country.Names[r.Language], | ||
| CountryCode: geo.Country.Code, | ||
| Continent: geo.Continent.Names[r.Language], | ||
| ContinentCode: geo.Continent.Code, | ||
| Lat: geo.Location.Lat, | ||
| Long: geo.Location.Long, | ||
| Timezone: geo.Location.TimeZone, | ||
| AccuracyRadiusKM: geo.Location.AccuracyRadiusKM, | ||
| PostalCode: geo.Postal.Code, | ||
| ASN: fmt.Sprintf("ASN%d", asn.AutonomousSystemNumber), | ||
| ASNOrg: asn.AutonomousSystemOrg, | ||
| Network: network.String(), | ||
| } | ||
|
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||
| if v4 := ip.To4(); v4 != nil { | ||
| result.IPType = 4 | ||
| } else if v6 := ip.To16(); v6 != nil { | ||
| result.IPType = 6 | ||
| } | ||
|
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| var subdiv []string | ||
| for i := 0; i < len(geo.Subdivisions); i++ { | ||
| subdiv = append(subdiv, geo.Subdivisions[i].Names[r.Language]) | ||
| } | ||
| result.Subdivision = strings.Join(subdiv, ", ") | ||
|
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| var summary []string | ||
| if result.City != "" { | ||
| summary = append(summary, result.City) | ||
| } | ||
|
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| if result.Subdivision != "" && result.City != result.Subdivision { | ||
| summary = append(summary, result.Subdivision) | ||
| } | ||
|
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| if result.Country != "" && len(summary) == 0 { | ||
| summary = append(summary, result.Country) | ||
| } else if result.CountryCode != "" { | ||
| summary = append(summary, result.CountryCode) | ||
| } | ||
|
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| if result.Continent != "" && len(summary) == 0 { | ||
| summary = append(summary, result.Continent) | ||
| } else if result.ContinentCode != "" && result.Subdivision == "" && result.City == "" { | ||
| summary = append(summary, result.ContinentCode) | ||
| } | ||
|
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| result.Summary = strings.Join(summary, ", ") | ||
|
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| if result.Summary == "" { | ||
| result.Error = "no results found" | ||
| } | ||
|
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| result.Host, err = s.rslv.GetReverse(ctx, ip) | ||
| if err != nil { | ||
| s.logger.WithError(err).WithField("ip", ip.String()).Debug("error looking up reverse dns for ip") | ||
| } | ||
|
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| s.cache.Set(r.CacheID(), result) | ||
| return result, nil | ||
| } | ||
|
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| func (s *Service) lookupASN(ctx context.Context, ip net.IP) (network *net.IPNet, query *models.ASNQuery, err error) { | ||
| var db *maxminddb.Reader | ||
|
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| db, err = maxminddb.Open(s.config.ASNPath) | ||
| if err != nil { | ||
| s.logger.WithError(err).Error("error opening asn db") | ||
| return nil, nil, err | ||
| } | ||
| defer db.Close() | ||
|
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| query = &models.ASNQuery{} | ||
| if network, _, err = db.LookupNetwork(ip, &query); err != nil { | ||
| s.logger.WithError(err).WithField("ip", ip.String()).Error("error looking up ip asn info") | ||
| return nil, nil, err | ||
| } | ||
|
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| return network, query, nil | ||
| } | ||
|
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| func (s *Service) lookupGeo(ctx context.Context, ip net.IP) (query *models.GeoQuery, err error) { | ||
| var db *maxminddb.Reader | ||
|
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| db, err = maxminddb.Open(s.config.GeoIPPath) | ||
| if err != nil { | ||
| s.logger.WithError(err).Error("error opening geoip db") | ||
| return nil, err | ||
| } | ||
| defer db.Close() | ||
|
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| query = &models.GeoQuery{} | ||
| if err = db.Lookup(ip, query); err != nil { | ||
| s.logger.WithError(err).WithField("ip", ip.String()).Error("error looking up ip geoip info") | ||
| return nil, err | ||
| } | ||
|
|
||
| return query, nil | ||
| } |
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